Joe Biden makes a comeback on Super Tuesday

The former vice-president of the United States Joe Biden has sealed his comeback in the race for the White House with a string of victories in the Super Tuesday primaries.

We hear from the Greek island of Samos and the struggle to cope with numbers of migrants trying to make their way across from the nearby Turkish coast.

The World Bank has committed 12 billion dollars in aid for developing countries grappling with the spread of the coronavirus.