$BTC Bitcoin falls as Israel's attack on Iran could continue for days.

Prime Minister Benjamin Netanyahu called the operation a necessary step to "eliminate this threat," adding that it would continue "for as long as necessary."

Iran has not yet issued an official response, but state media reported explosions and airspace closures.

Meanwhile, the U.S. began withdrawing diplomats from Iraq and offered voluntary evacuations to military families in neighboring countries.

The State Department also issued warnings for American citizens to leave Iraq, citing regional instability.

In Washington, Secretary of State Marco Rubio said that Israel acted unilaterally but had informed the U.S. in advance.