Israel blamed Hamas for a "terror tunnel," calling it a "serious threat to Israeli civilians."
Getting a foothold in neighboring countries is a way for Iran to exert influence.
Ismail Haniya called for a new "intifada," or an uprising, against Israel after President Trump's decision to recognize Jerusalem as Israel's capital.
Since 2007, Hamas has controlled Gaza and Fatah has controlled the West Bank. Now, they're trying to work out their differences.
The Palestinian Authority is set to take over responsibilities in the Strip after Hamas agreed to dissolve its administrative committee.
Hamas says it's ready to dissolve its government in the Gaza Strip for unity rule with the Fatah-led Palestinian Authority in the West Bank.
Israel is building an underground barrier along its border with the Gaza Strip to prevent Hamas from using tunnels in and out of the area.
In 2014, the EU's General Court nullified restrictions against Hamas. But a higher court has decided that ruling was a mistake.
At least six people are dead after new security measures sparked a day of violence in East Jerusalem and the West Bank.
Hamas elected a new leader the same week it released an updated, less radical statement of its policies.
Hamas has fought three wars with Israel, and the U.S. labeled it a terror group in 1997.
Charity worker Mohammad El Halabi has been accused of taking money designated for people in Gaza and giving it to the terrorist organization Hamas.