A second flotilla carrying humanitarian aid to Palestinians in Gaza was due to set sail on Sunday from the Spanish port of Barcelona to try to break the Israeli blockade.About 30 boats planned to leave the Mediterranean port city laden with medical aid and other supplies on the Global Sumud Flotilla, and more vessels are expected to join along the route towards Palestine.The Israeli military halted the roughly 40 boats assembled by the same organisation in October last year as they attempted...