China pushed back against the United States in its speech at the UN General Assembly on Saturday, saying sovereignty of countries in the Gulf should be respected and urging the "relevant country" to stop threatening Cuba and lift its blockade on it.Vice President Han Zheng did not mention the US by name in his remarks. The US has launched a pressure campaign on Cuba that has largely blocked oil from reaching the island. The US war on Iran started with US-Israeli strikes in February.The comme...