VLADIMIR Putin has ordered the training of Russia’s strategic nuclear forces, state-owned news agency RIA reported. It comes as a US official has warned of “troubling developments” involving Russia’s nuclear arsenal. ReutersPutin observed the drills via video link[/caption] Russian Defence Minister Sergei Shoigu reported to Putin that the drills were intended to simulate a massive nuclear strike by Russia in retaliation for a nuclear attack on its soil. The Kremlin said in a statement that all tasks set for the exercise were fulfilled and all the missiles that were test-fired reached their designated targets. The United States has said that Moscow informed it about the drills in advance. There are growing fears Vladimir Putin could detonate a nuke as Moscow continues to wildly swing its nuclear sabre. The tyrant is becoming increasingly frustrated as his troops have been hit with a series of disastrous defeats across the frontline in Ukraine. There are concerns that if Vlad finds himself boxed into a corner, he could resort to using nuclear weapons. Putin has repeatedly raised the spectre of using the weapons – and it’s feared he could potentially be lining up a test in the Black Sea.