IDOMENI, Greece — Turkey’s coast guard says 12 migrants have drowned after a boat taking them to the Greek islands capsized in rough weather. A coast guard statement said 26 others were rescued on Thursday off the Turkish Aegean resort of Foca, near Turkey’s third-largest city, Izmir. [...] Thursday, Macedonian authorities have reopened their borders to asylum-seekers heading north to wealthier European countries, but are only letting in people whose stated final destination is Germany or Austria.