North Korea announces plans to restart the country's nuclear facilities, including a mothballed reactor that has been closed since 2007.<br/> <br />The Yongbyon plant is the North's only known source of plutonium for its nuclear weapons programme.<br/> <br />As well as restarting the Yongbyon reactor, a uranium enrichment plant will also be put back into operation.<br/> <br />The news comes amid soaring regional tensions in the Korean Peninsula, with the U.S. bolstering forces there after North Korea threatened to launch attacks on American bases.<br/> <br />North Korea, one of the world's most isolated states, conducted its third nuclear test in February, but it's believed to be years away from developing nuclear weapons.<br/> <br />In a speech on Sunday, the North's leader Kim Jong-un stressed that nuclear weapons would serve as a deterrent.<br/> <br />North Korea claims the region is on the brink of a nuclear war in the wake of U.S. sanctions.<br/> <br />In response, South Korea has called on the North to curb its nu
