Italian Prime Minister Matteo Renzi called for an emergency European summit this week to address the worsening migrant crisis off Italy's southern coast after up to 950 men, women, and children were feared to have drowned in a shipwreck in the Mediterranean Sea. With the crisis set to dominate a meeting of European Union foreign ministers, Renzi said concerted EU action was needed after the latest tragedy in which a heavily overloaded vessel capsized 60 miles north of Libya, leaving hundreds in the water. UN and coastguard officials reported that survivors spoke of up to 700 people being on the boat, though the exact number could not be confirmed as a dozen rescue boats continued searching for survivors.