Deputy Foreign Minister Sergei Ryabkov issued the warning, but declined to specify what those steps would be. He said US sanctions would aggravate tensions and Washington should instead be seeking dialogue with Tehran. Mr Ryabkov's remarks come just a few days after he said Iran and US tensions are putting the world on the brink of World War 3. Tensions have reached boiling point it was reported Donald Trump had ordered a drone attack on Iran before pulling out at the last minute. Mr Ryabkov said “the situation is on the brink of war”, according to Russian news agency RIA, after Iran shot down a US drone which was flying in international airspace near the coast of Iran, in the Hormuz Strait.All rights reserved for this news site express.co.uk and under his responsibility