Geopolitical risk and the reality of surging U.S. and Global oil demand sent oil on a tear to a three-week high. Oil prices rose as President Donald Trump and Saudi Crown Prince Mohammad Bin Salman met as traders felt it was a signal that soon Saudi Arabia and The United States would work together to take a much tougher stance on Iran.

“A lot of bad things are happening in Iran,” he said. “The deal is coming up in one month and you will see what happens and you’re going to see what I do.” That comment gave oil another boost but that was then offset by a surprising comment on Russia. President Trump said he called Russian President Vladimir Putin to congratulate him on his victory saying, “We had a very good call,” and that he expects to meet Putin in the not too distant future to discuss the arms race, which is getting out of control.

This caught many traders by surprise because of Putin’s meddling in the U.S. election and rigging his own. Most traders thought they might get a hint of tougher sanctions on Russia but instead now will have to focus on what may or may not come out of this meeting. Trump may want to work with Putin on thorny issues like North Korea, Syria and Yemen, to name a few, even though many are outraged by President Trump’s call to the Russian leader.

Even though oil dipped after Trump’s Russian surprise call, it later resumed the rally, as demand prospects continue to rise. Some also thought that OPEC helped the cause by admitting that the global oil market is a lot closer to being in balance than they and many others thought it was.

Bloomberg reports that “OPEC and its allies held further discussions about changing the way they measure the impact of their production cuts, including proposals that would affect how quickly they hit their target,” according to delegates from the group.

One option that OPEC and non-OPEC delegates discussed in Vienna on Monday is to continue measuring commercial oil inventories in developed economies against the five-year average, but without counting years of high stockpiles, the delegates said. Another option is to use a seven-year inventory average, they said. This would move their goal of reducing stockpiles to normal levels further from reach, potentially requiring a longer period of cuts to achieve it. Delegates also considered a period of more than seven years.So, in other words, OPEC and Non-OPEC may really drain inventories a lot more, raising the risk of a shortfall later this year.