Police in Macedonia have used tear gas and stun grenades against migrants attempting to cross the border into the country from Greece.
Greek banks have reopened for the first time in three weeks following discussions to avoid a debt default and eurozone exit.
The German parliament has voted in support of negotiations on Greece’s €86bn (£60bn) bailout deal.
Eurozone ministers have backed a €7bn (£5bn) bridge loan to help keep the Greek economy afloat until a bailout is approved, but many Greek’s remain unhappy about the terms of the deal.
The International Monetary Fund (IMF) has attached the eurozone over the bailout terms offered to Greece.