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Biological
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There is no evidence that Brazil has ever developed or produced biological weapons. It ratified the Biological and Toxin Weapons Convention (BWC) in 1973 and signed the Mendoza Declaration in 1991, which prohibits biological as well as chemical agents. Brazil's opposition to biological weapons is evident from reports that senior government officials oppose using biological agents even to control coca production in neighboring Colombia. Brazil does have the capacity to produce biological agents; for example, it has one of the world’s largest crops of the castor bean (which naturally produces the toxin ricin) and is proficient in advanced biological techniques such as gene sequencing. However, there is no indication that Brazil presents a biological weapons threat; it is, in fact, a staunch proponent of biological weapons nonproliferation.
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While Pakistan is not known to possess biological weapons, it has talented biomedical and biochemical scientists and well-equipped laboratories, which would allow it to quickly establish a sophisticated biological warfare (BW) program, should the government so desire. Indeed, the United States reported in 1996 that Islamabad had been "conducting research and development with potential BW applications." It is not known whether this potential has since been realized. Pakistan signed the Biological and Toxin Weapons Convention (BWC) in April 1972 and ratified it in 1974.
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Chemical
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There is no evidence that Brazil has ever embarked on a chemical warfare (CW) program; to the contrary, Brazil is an extremely active participant in CW nonproliferation efforts. Even before the Chemical Weapons Convention (CWC) came into existence, Brazil engaged in regional nonproliferation efforts. For example, in September 1991, Brazil, Argentina, and Chile signed the Mendoza Declaration, which commits signatories not to use, develop, produce, acquire, stock, or transfer—directly or indirectly—chemical or biological weapons. Brazil participated actively in the negotiations for the CWC and ratified it in March 1996, thereby becoming a charter member of the Organisation for the Prohibition of Chemical Weapons (OPCW). By the end of 2000, Brazil had hosted five OPCW inspections of its chemical industry sites, as well as the first simulation of a challenge inspection of private industry.
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Pakistan signed the Chemical Weapons Convention (CWC) in 1993 and ratified the treaty in 1997. Islamabad has apparently made no admission in its treaty-mandated declarations of having possessed chemical weapons. Further, there is no reliable information in publicly available literature asserting that Pakistan has ever possessed chemical weapons, although some analysts suspect that it supports an offensive program.
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Missile
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Brazil curtailed the military potential of its space launch vehicle (SLV) program in the early 1990s and joined the Missile Technology Control Regime (MTCR). Previously, however, military control over the SLV program and an ambitious export program of short-range rockets had raised concerns that Brazil might develop ballistic missiles and supply other countries with them.
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Pakistan is developing both solid- and liquid-fueled ballistic missiles, based extensively on foreign systems. In the early 1990s, Pakistan purchased a small number of 300km-range M-11 ballistic missiles from China; Beijing also built a turnkey ballistic missile manufacturing facility at Tarwanah, a suburb of Rawalpindi. By the late 1990s, China helped Pakistan develop the 750km-range, solid-fueled Shaheen-1 ballistic missile, which was last tested in October 2002. In the late 1990s, Pakistan also acquired a small number of 1,500km-range Nodong ballistic missiles from North Korea. The Pakistani version of the Nodong, known as the Ghauri, was flight-tested in April 1998 and April 1999. The ballistic missiles are being developed by two rival agencies, the Pakistan Atomic Energy Commission and the Khan Research Laboratories, which fall under the aegis of the National Development Complex.
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Nuclear
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From the 1960s to the early 1990s, Brazil pursued an ambitious program of nuclear energy and technological development, which included construction of an unsafeguarded uranium enrichment facility under Navy direction. However, Brazil has since disavowed nuclear weapons, become a State Party to the Treaty on the Non-Proliferation of Nuclear Weapons (NPT), and, with Argentina, established a bilateral inspection agency to verify both countries' pledges to use atomic energy only for peaceful purposes. Brazil mines uranium, which is shipped to foreign countries for conversion and enrichment, and returned to Brazil, where it is fabricated in Resende into fuel for its two nuclear power reactors. When completed, a uranium enrichment plant under construction at Resende will allow the country to make its own low-enriched uranium fuel for its nuclear power industry. As of mid-2005, the government of Brazil was considering the possibility of signing an Additional Protocol with the IAEA and was planning to release a comprehensive report on the future of the country's nuclear program.
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In the mid-1970s, Pakistan embarked upon the uranium enrichment route to acquiring a nuclear weapons capability. By the mid-1980s, Pakistan had a clandestine uranium enrichment facility; and as early as 1989-1990, the United States concluded that Islamabad had acquired the capability to assemble a first-generation nuclear device. Pakistan is believed to have stockpiled approximately 580-800kg of highly enriched uranium (HEU), sufficient amounts to build 30-50 fission bombs. In 1998, Pakistan commissioned the Khushab research reactor, which is capable of yielding 10-15kg of weapons-grade plutonium annually. According to the United States, China helped Pakistan by providing nuclear-related materials, scientific expertise, and technical assistance. Islamabad conducted nuclear tests in May 1998, shortly after India conducted its own weapon tests and declared itself a nuclear weapon state. Pakistan is not a signatory to the Treaty on the Non-Proliferation of Nuclear Weapons (NPT).
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Overview
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Brazil has abjured nuclear, biological, and chemical weapons, and curtailed its ballistic missile program in the early 1990s. From the 1970s to the early 1990s, however, Brazil’s nuclear program aroused concern that the country was seeking to develop nuclear weapons. The international community—and Washington in particular—raised additional concerns that technology from Brazil’s space launch vehicle (SLV) program would be used for production of ballistic missiles. Brasilia is now a member of all key international nonproliferation regimes.
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Pakistan embarked on a nuclear weapon program in the early 1970s after its defeat and break up in the Indo-Bangladesh war of 1971. Islamabad regards nuclear weapons as essential to safeguard the South Asian balance of power and offset its conventional inferiority and lack of strategic depth against India. The technological complexity associated with nuclear weapons and their systems of delivery is also closely tied to Pakistan's post-colonial identity as the first Muslim nation to have acquired such a capability. There is no reliable, publicly available information to suggest that Pakistan has biological or chemical weapons.
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