MOSCOW, May 14 (Reuters) - Russia is establishing a "full-fledged partnership" with Afghanistan's ruling Taliban and is encouraging other countries in the region to expand cooperation with Kabul, a senior Russian security official was quoted on Thursday as saying. Russia last year became the first country to formally recognise the Islamist Taliban government that seized power in August 2021 as U.S.-led forces staged a chaotic withdrawal from Afghanistan after 20 years of war. Interfax news agency quoted Russian official Sergei Shoigu as saying cooperation with Kabul was important for the security and development of the region. Shoigu, who is secretary...