Germany's vice chancellor is blasting what he describes as irresponsible bickering in Chancellor Angela Merkel's conservative bloc over the migrant crisis. Greek Prime Minister Alexis Tsipras has expressed "endless grief" at the new migrant tragedies in the Aegean Sea, saying they put Europe to shame. Tsipras accused the European Union of inability to effectively address the humanitarian crisis, and said Western countries that took part in military interventions in the Middle East bear responsibility for the mass migrant flows.