WASHINGTON - White House national security adviser John Bolton, who has in the past suggested the US government should push for a change in government in Iran, said on Sunday that is not the Trump administration's current policy."That's not the policy of the administration. The policy of the administration is to make sure that Iran never gets close to deliverable nuclear weapons," Bolton said on the ABC program "This Week."“I’ve written and said a lot of things over the years when I was a complete free agent," Bolton said when pressed on the issue regime change in Iran on CNN's "State of the Union."Bolton, whom President Donald Trump tapped in March to replace former national security adviser H.R. McMaster, emphasized in the CNN interview that it was his job to advise Trump but that the president is the one who makes the decisions."The circumstances in I’m in now is that I’m the national security adviser to the president. I’m not the national security decision maker. He (Trump) makes the decisions and the advice I give him is between us.”In a Fox News interview in January, Bolton said the United States should take steps such as increasing economic pressure on Iran and providing support to opponents of the government."There's a lot we can do to, and we should do it," said Bolton, who at the time was with the American Enterprise Institute think tank. "Our goal should be regime change in Iran."In 2015, Bolton wrote an op-ed in the New York Times calling for air strikes on Iran’s nuclear facilities. And in 2016, Bolton called for regime change while he was reportedly under consideration to be Secretary of State.