India says it has successfully launched an intercontinental missile capable of carrying a nuclear warhead. The Agni-V has a range of more than 3,000 miles, meaning it could reach China and Europe. India joins six other countries that are believed to have such long-range missiles, including the United States, Russia, China, France, Britain and Israel. India has developed its nuclear capability with the tacit backing of the United States, which lifted a ban on nuclear trade with Delhi in 2008, despite the Indian government’s refusal to sign the Non-Proliferation Treaty.