Tripoli, Lebanon's second-largest city, is located nearly 20 miles from the Syrian border. In addition to the 500,000 Lebanese citizens and Palestinian refugees who have been here for decades, more than 42,000 Syrian refugees have sought shelter in Tripoli since the start of the war. Tripoli's population now numbers more than 600,000. Since May 2012, Doctors Without Borders/Médecins Sans Frontières (MSF) has been providing support to the emergency department at the city's government hospital. It treats Lebanese and the Palestinian population and must now also handle the inflow of wounded Syrians and the refugees' medical emergencies. The organization trains the hospital's medical staff here and provides both technical support to manage emergencies and medical supplies.