Tensions have flared between Iran and Pakistan this week, prompting concern from the United States that the situation could escalate further. On Thursday, Pakistan launched airstrikes on separatist militants within Iran, in retaliation for an attack two days prior when Tehran struck bases of another group inside Pakistani territory.When asked about the clashes, U.S. President Joe Biden said As you can see Iran is not particularly well liked in the region, and where that goes, were working on now. I dont know where that goes. His comments suggest that Irans actions have only served to isolate it among its regional neighbors.Speaking to reporters aboard Air Force One, White House National Security spokesperson John Kirby said Washington is monitoring the situation closely. We dont want to see an escalation clearly in South and Central Asia. And were in touch with our Pakistani counterparts, he said.Kirby added that the attack on Pakistan was just the latest example of the destabilizing behavior that Iran has engaged in across the region. The U.S. has already been at odds with Iran over its support of Houthi rebels in Yemen, who have been attacking commercial ships in the Red Sea.Tensions between the regional powers remain high, and all eyes are on whether further clashes between Iran and Pakistan ensue. The U.S. has expressed a desire to avoid escalation, but also criticized Irans role in stoking instability.