A scene from the Trump ad. Instagram/Donald Trump/screengrab Republican presidential front-runner Donald Trump fired off another one of his unusual Instagram attack ads on Monday.

His latest video hit US President Barack Obama for describing ISIS — aka the Islamic State group — last week as "a bunch of killers with good social media."

The video interspersed news clips of Islamic State violence with clips from Obama goofing around with a selfie stick for a BuzzFeed video.

"IT IS TIME FOR SERIOUS LEADERSHIP," the Instagram video declared.

Trump has released a series of these seemingly low-budget attack ads throughout the campaign. Some have been humorous, such as one that suggested presidential rival and former Florida Gov. Jeb Bush could help people who have difficulty sleeping. Others, like one aimed at another rival, Ben Carson, have been more hard-hitting.

View Trump's latest video below: