President Obama on Saturday sent a cautionary note to GOP leaders ahead of the looming debt-ceiling debate, warning the Republicans that anything but a timely hike in the nation’s borrowing cap represents a “dangerous game” that threatens the economy both at home and abroad.

In his weekly radio address to the country, Obama urged GOP leaders to support a drama-free increase in the debt limit, and tackle the issues of spending, revenues and entitlements in a separate context.

“As I said earlier this week, one thing I will not compromise over is whether or not Congress should pay the tab for a bill they’ve already racked up,” Obama said from Honolulu, Hawaii, where he’s vacationing. “If Congress refuses to give the United States the ability to pay its bills on time, the consequences for the entire global economy could be catastrophic.