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A closer look at the Hamas-constructed tunnels at Israel-Gaza border

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Right near Israel’s border with Gaza, a battle is underway where tunnels have been discovered. They are used by Hamas militants to launch attacks inside Israel. (Source: Al Qassam Brigades/CNN) Right near Israel’s border with Gaza, a battle is underway where tunnels have been discovered. They are used by Hamas militants to launch attacks inside Israel. (Source: Al Qassam Brigades/CNN)

(CNN) – Israel has said any truce with Hamas would have to leave room for Israel to continue destroying tunnels used by militants.

Right near Israel’s border with Gaza, a battle is underway where tunnels have been discovered. They are used by Hamas militants to launch attacks inside Israel.

The Israeli military is determined to destroy them all. These tunnels are barley large enough to maneuver.

The purpose of this tunnel is to go from Gaza into Israel. There's an Israeli kibbutz right at the exit. The entrance is in Hagenus in Gaza. It's almost three kilometers long.

The tunnel threat has Israel on edge. The IDG says that the sole purpose of these underground passages is to attack and kidnap Israelis.

"It's very easy to do it, to kill and go, and nobody know that there are people in the tunnel," Lt. Col. Oshik Azouli of the Israeli Defense Force said.

The Israeli military discovered one tunnel before it was finished. Azouli believes it took Hamas about two years to build.

“It's like a one meter for a day, a few meters for a day. They need a lot of time to do it," Azouli said.

The process of locating and destroying the tunnels also takes a long time. Israeli officials say they’ve discovered at least 15 tunnels so far, but the passages are still being used.

Israel said on Tuesday, its troops killed five Palestinian militants as they left a tunnel in Gaza.

Azouli said they’ve been in one tunnel for a few weeks.

Israeli intelligence officers use radar to track the development of these tunnels, but the IDF says it’s an open question as to when this network of passages will be fully dismantled.

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