What We're Following This Afternoon

Trump watch: Polls show the Republican frontrunner leading Senator Marco Rubio in the latter’s home state of Florida ahead of tomorrow’s winner-takes-all primary. In Ohio, the other big U.S. state that votes tomorrow, Trump is in a statistical dead heat with John Kasich, the state’s governor. Voters in Illinois, Missouri, and North Carolina also head to the polls. On the Democratic side, Hillary Clinton has a good chance to pull away from Bernie Sanders.

Turkish airstrikes: Turkey is targeting camps in Iraq that belong to militants from the outlawed Kurdistan Workers Party (PKK). The group is being blamed for the deadly attack in Ankara that killed more than 30 people.

Closed borders? Hundreds of migrants amassed in Greece have crossed into Macedonia, the former Yugoslav republic, through a border fence despite the closure of the frontier. Last week, Macedonia said it would no longer allow migrants in, closing the Balkan Route that those fleeing the civil war in Syria and unrest elsewhere have been using to make their way to Germany.     

News from the morning here