Oil prices began to rise on Monday based on tough statements by the US and Iran, Bloomberg reports. US Secretary of State Mike Pompeo said that Washington will continue to put tough pressure on Tehran and urged other states to join it. As the president of the Islamic Republic of Iran, Hasan Ruhani, said earlier, the adventurous actions of the US can lead to an unprecedented war. US President Donald Trump, in response to this statement, wrote on Twitter that Iran's threats could have serious consequences, “which only a few countries have experienced in world history.” By 14:41 Moscow time, September futures for Brent crude went up by 92 cents to 73 dollars 99 cents a barrel. The price of September futures for WTI crude rose 71 cents to 68 dollars 97 cents a barrel.