Putin and Kim keep quiet on details of mutual aid agreement

As state visits go, Vladimir Putin's arrival in North Korea on Wednesday was relatively low-key. There was no long line of senior government officials on the airport tarmac in Pyongyang and only a small guard of honour. Beneath an ink-black sky, the Russian president stepped off the plane to be greeted by a handshake and a hug from Kim Jong-un, before being presented with a bouquet by a woman in traditional hanbok dress. But the modesty of the occasion was deceptive. Putin arrived in the North Korean capital from Moscow, via the Russian Far East, in darkness, the leaders' motorcade…