WASHINGTON, USA - FEBRUARY 15: President Donald Trump addresses the nation after the mass shooting at Marjory Stoneman Douglas High School in Parkland, Florida, in Washington, USA on February 15, 2018. Former student Nikolas Cruz has been apprehended and charged with 17 counts of premeditated murder after attacking his former school with an AR-15 style assault rifle. Samuel Corum / Anadolu Agency