Britain’s military aid to Ukraine could result in a “collision between nuclear powers”, says Russia's ambassador to the UK - as he threatened World War 3 was now imminent. Ambassador Andrey Kelin took to Telegram warning British support would "seriously escalate" the already grave situation. He said: "We have made multiple warnings that [the use of Western] missiles to strike inside Russia will be a serious escalation. Despite these warnings, the US administration supported by France and the UK