Tighter US sanctions on Cuba have led to a spike in infant mortality and plummeting survival rates for child cancer patients, the UN warned in one of its strongest rebukes of Washington’s pressure campaign against the island. US President Donald Trump’s push to force change in Cuba by cutting off almost all fuel shipments to the government is depriving the nation of 10 million people of access to water, food and healthcare, UN High Commissioner for Human Rights Volker Turk said on Monday in a...