An Israeli soldier carries a shell as he and his comrades prepare their Merkava tanks stationed at an army deployment area along the border between Israel and the Hamas-controlled Gaza Strip on July 31, 2014. Israel mobilised 16,000 additional reservists today to bolster forces fighting in Gaza as Washington gave its ally the go-ahead to raid stocks of emergency US weapons stored on Israeli soil.  AFP PHOTO/JACK GUEZ        (Photo credit should read JACK GUEZ/AFP/Getty Images)