While Prime Minister Alexis Tsipras and thousands of Greek voters celebrated Greece's rejection of an economic bailout, a huge cloud of uncertainty hangs over the rest of the world.

Thousands of miles away, Greek families in the Hudson Valley say they are supportive that Greek voters delivered a resounding "no" to an international bailout in Sunday's referendum. Savvas Tsentides, from the Mount Olympus Diner in Yonkers, says he stands in solidarity with his homeland.

He describes the bailout as an invasion without guns.

"They cut everything - pensions in half, on top of it," he says. "We have a tourist industry, and they wanted to add 23 percent tax on occupancy. That's all we have."

So far, U.S. markets have barely blinked, but some international markets have fallen. There may be a temporary dip to 401(k)s, but experts say not to panic because Greece makes up just 0.3 percent of the global economy.

The leaders of all 19 eurozone countries will hold an emergency meeting Tuesday.