Venezuelan President Nicolás Maduro has authorized the dispatch of oxygen to Brazil to help its South American neighbor treat people sickened amid another wave of the coronavirus, despite frosty relations between the two governments and Venezuela’s own lack of hospital supplies.

The re-imposition of coronavirus lockdown measures in Serbia touched off violent clashes in the capital Belgrade that left at least 60 police and protesters injured amid renewed warnings that the virus is still gathering pace, reports AP.