The two leaders were commenting after Japanese Prime Minister Abe’s diplomatic visit to Iran, in which he pledged to de-escalate tensions between Washington and Tehran, failed. Just last month, Mr Trump gave Mr Abe his blessing to mediate between the nations, saying that the US were looking to advance peace talks. However, this latest development – in conjunction with Secretary of State Mike Pompeo’s allegations that Iran was behind the attack on two oil tankers in the Gulf of Oman – have raised concerns over an imminent conflict. Related articles World War 3: How Gulf of Oman attack risks Saudi fury China US trade war: How Donald Trump is 'provoking China' The US President said: “While I very much appreciate Prime Minister Abe going to Iran to meet with Ayatollah Ali Khamenei, I personally feel that it is too soon to even think about making a deal. “They are not ready, and neither are we!” His words came hours after two oil tankers were attacked in the Gulf of Oman – just miles off the coast of Iran. Ayatollah Khamanei and President Trump got in a war of words (Image: GETTY) Japanese PM met with Rouhani as well (Image: GETTY) Despite the attacks happening at the same time that Supreme Leader Ayatollah Khamanei was meeting Prime Minister Abe for peace talks, the US were swift to blame Tehran – without providing any evidence. Mr Pompeo said: "This is based on intelligence, the weapons used, the level of expertise needed to execute the operation, recent similar Iranian attacks on shipping, and the fact that no proxy group operating in the area has the resources and proficiency to act with such a high degree of sophistication.” The US later released a blurry video which they said showed Iran removing an unexploded mine from an oil tanker. Tehran virulently denied the claims, with Javad Zarid labelling the incident “suspicious” and accusing the US of trying to “sabotage diplomacy”. Related articles World War 3 warning: How Russia is 'using Turkey to divide NATO' Iran crisis as Japan talks have fail and atom bomb revelation An Iranian official, meanwhile, accused Washington of trying to destabilise relations between Iran and the international community. The Supreme Leader also sent a stern message to Washington earlier yesterday, saying: "I do not consider Trump as a person worth exchanging any message with.” Mr Trump’s comments represent a stark contrast to his somewhat diplomatic rhetoric a few weeks ago. Two oil tankers were attacked in the Gulf of Oman (Image: GETTY) A popular Iranian newspaper labelled Mr Trump a war criminal on Wednesday (Image: GETTY) After meeting Mr Abe, he said: “Iran has a chance to be a great country, with the same leadership. "I really believe that Iran would like to make a deal. I think that's very smart of them and I think there's a possibility for that to happen." Tensions between the two countries have been steadily increasing since the US withdrew from an international nuclear deal that curbed sanctions on Iran. They ramped up again early last month when Trump placed even more sanctions on the embattled nation – and bolstered US forces in the region.All rights reserved for this news site express.co.uk and under his responsibility