Burbank - Republican presidential candidate Jeb Bush will step up his criticism of Hillary Rodham Clinton and her tenure as secretary of state on Tuesday, arguing in a speech on foreign policy that the Democratic front-runner shared in the mistakes that he says led to the rise of the Islamic State (ISIS).The former Florida governor and the son and brother of two former presidents will also call for a renewed sense of US leadership in the Middle East, which he says is needed to defeat the militant group and an ideology that "is, to borrow a phrase, the focus of evil in the modern world"."The threat of global jihad, and of the Islamic State in particular, requires all the strength, unity and confidence that only American leadership can provide," Bush would say, according to excerpts of his remarks as prepared for delivery.Bush would be addressing some of the key issues in the 2016 presidential election, national security and terrorism.While Bush and Clinton were the biggest names going into the presidential race, lately they have been overshadowed by Donald Trump, the outspoken billionaire magnate and reality television star who has emerged as a front-runner in the crowded Republican field, despite his fiery and controversial rhetoric. Clinton remains the overwhelming favourite for the Democratic nomination.In a speech at the Ronald Reagan Presidential Library in Simi Valley, California, Bush planned to tie the rise of the militant Sunni group to the departure of US forces from Iraq in 2011. ISIS occupies a large swath of Iraq and Syria, and has a presence elsewhere in the Mideast."ISIS grew while the United States disengaged from the Middle East and ignored the threat," Bush would say. "And where was Secretary of State Clinton in all of this?"Clinton, he says, "stood by as that hard-won victory by American and allied forces was thrown away. In all her record-setting travels, she stopped by Iraq exactly once".'A case of blind haste to get out'American troops left Iraq in December 2011, as required under a 2008 security agreement worked out by former President George W Bush. Both countries tried to negotiate plans to keep at least several thousand US forces in Iraq beyond the deadline to help keep a lid on simmering tensions among Islamic sects.The Iraqi government refused to let US forces remain in their country with the legal immunity President Barack Obama's administration insisted was necessary to protect them. Obama, who campaigned to end the war in Iraq, took the opportunity to remove US forces from the country."It was a case of blind haste to get out and to call the tragic consequences somebody else's problem," Bush would say. "Rushing away from danger can be every bit as unwise as rushing into danger, and the costs have been grievous."Since last year, after the ISIS gained a foothold in Iraq and Syria, Obama has ordered the deployment of about 3 500 American military trainers and advisors who are helping Iraqi forces fight the group.But despite 6 000 airstrikes by US and allied forces on ISIS positions over the past year, American intelligence agencies recently concluded that the group remained a well-funded extremist army able to replenish its ranks with foreign fighters as quickly as the US-led coalition could eliminate them. Meanwhile, the group has expanded to other countries including Libya, Egypt and Afghanistan.Bush has yet to say exactly what a US-led campaign against the ISIS would look like if he is elected president.That includes saying how many US forces he would potentially seek to return to Iraq, although he has said he supports allowing US military personnel to join Iraqi fighters in guiding airstrikes, which they are barred from doing now. Bush has said he supports a no-fly zone in Syria, but has not suggested US advisors or fighters deploy to Syria.