(Al Jazeera English News Headlines: May 21, 2010) Thailand’s prime minister has called for national unity following the deadly anti-government protests on the streets of Bangkok, but made no mention of new elections. Stock markets worldwide continue to suffer from jitters stemming from the Eurozone financial crisis. BP has now admitted that more oil has been leaking into the Gulf of Mexico than first believed; the Gulf Coast braces for the environmental and economic impact.