Russian President Vladimir Putin oversaw a series of nuclear tests this week amid "growing geopolitical tensions".Vladimir Putin oversaw a series of practice missile tests this week while warning of “growing geopolitical tensions”.The Russian president has repeatedly warned the West that he would not hesitate to use his nuclear arsenal if it were to become more directly involved in the Ukraine war and allow Kyiv to use its long-range missiles to target Russia.He echoed this threat on Tuesday, when he explained why Russia was using a “triad” of ground, sea and air launched missiles from northwest Russia to a peninsula in the far-east.He said: “Given the growing geopolitical tensions and the emergence of new