ABOARD CARGO SHIP ARK FUTURA (AP) — Denmark’s foreign minister on Tuesday urged Syria to give up the last of its chemical weapons agents within days to meet a June 30 deadline for completely ridding the war-torn country of its lethal stockpile.

Martin Lidegaard said there are “serious security problems” concerning the last 16 containers, some of which have agents used to create deadly VX and Sarin nerve gases.