US Senator John McCain has blasted President Barack Obama’s foreign policy, saying under his administration the United States has been “on a holiday from American leadership.”

McCain, the Republican chairman of the Senate Armed Services Committee, said on Saturday that Obama did not have a strategy to resolve the Middle East’s conflicts and growing unrest in other parts of the world.

“What's unfortunately clear is this President has no strategy to successfully reverse the tide of slaughter and mayhem in a world that Director of National Intelligence General James Clapper says has not faced more crises and more refugees than we confront today,” the Arizona senator said in this week’s GOP address.

“The crisis in the Middle East has not been contained,” he added.

The senator predicted that the so-called ceasefire in Syria will collapse, resulting in a “stronger ISIL that will benefit from the chaos left behind.”

McCain said Obama’s strategy to destroy the Daesh (ISIL) terrorist organization was “reactive, slow and insufficient.”

“We have achieved some tactical and operational success against ISIL thanks to the excellence of our military leadership and our troops on the ground,” he said. “But at a strategic level, we always seem to be a step behind, a day late, and a dollar short.”

McCain slammed Obama’s decision to scale back the US military footprint in the Middle East, saying the unrest there is spreading and has “reached the streets of Paris, Brussels, and San Bernardino.”

The turmoil, McCain said, has created “a refugee crisis that has destabilized Europe and divided the West.”

Obama’s lack of strategy in Syria has given Russian President Vladimir Putin an opportunity to “reassert Russia as a global power through intervention in Syria,” he said.

McCain also ripped the Obama administration for “shamefully” refusing to provide “lethal assistance” to Ukrainian armed forces two years after “Russia invaded Ukraine and annexed Crimea.”

Touching on the escalating tensions with China, the veteran lawmaker argued that the administration has failed to defend US interests against China’s actions as a “petty bully.”

“President Obama has failed to take timely action to defend our interests and our allies fearing China might be less likely to cooperate on priorities he thought were more important, like climate change and the reckless Iran nuclear deal,” he said. “And as a result, China’s increasingly assertive behavior continues.”