Guatemala's  President Bernardo Arevalo on Sunday declared a 30-day state of siege after suspected gang members killed at least seven police officers, following a standoff in three of the country's prisons. The state of siege requires a congressional nod but can take effect before a vote. According to Guatemalan law, a state of siege can temporarily limit or suspend civil liberties and ​expand the the power of ​security forces in response to threats to public order. On Saturday, 46 guards were