New Delhi, Dec. 27 -- Newly declassified documents reveal that former US president George W Bush and Russian president Vladimir Putin shared anxieties regarding the stability of Pakistan's nuclear arsenal, with Putin bluntly characterising the nation as a "junta with nuclear weapons" and Bush predicting that China would eventually become a significant threat to Russian interests. The memorandums of conversation, released this week by the National Security Archive, offer a verbatim look at private exchanges between the two leaders from 2001 to 2008. While much of the public focus at the time was on the war on terror, the transcripts show that concerns over the proliferation network of Pakistani scientist AQ Khan and the opacity of Islamabad'...