Israel’s defense minister has declared the start of a “new phase” of the war as Israel turns its focus toward the northern front against Hezbollah militants based in Lebanon. Two waves of explosive attacks hit Syria and Lebanon: an apparent Israeli attack targeting pagers used by Hezbollah that killed at least 12 and wounded nearly 3,000 on Tuesday, and exploding walkie-talkies and other electronics Wednesday across Lebanon that killed at least 20 people and injured 450 others.

“We are at the start of a new phase in the war—it requires courage, determination and perseverance,” Israeli Defense Minister Yoav Gallant told troops on Wednesday. The head of Hezbollah’s Executive Council promised the group would respond to Tuesday’s pager explosion attack with “special punishment”. Meanwhile, Hezbollah militants fired a fresh barrage of rockets into northern Israel on Thursday.