Senators Tom Cotton and Marco Rubio, both Republicans, expressed their concerns following an attack on a concert hall in Moscow, that ISIS' capability to execute terrorist attacks on US soil and against its citizens is alarming.

Cotton attributed this situation to the "failed policy of withdrawal from Afghanistan”.

ISIS-K attacked a concert hall on the outskirts of Moscow on March 23, resulting in over 130 deaths.

Tom Cotton, a member of the Senate Intelligence Committee, voiced his "serious concerns" about the potential of ISIS to attack American citizens, describing it as a "significant threat”.

On Fox News, Cotton stated, "It is deeply regrettable that innocent people, women, and children, were killed in Moscow, but the next attack could target US embassies in Asia and Europe or our students on a field trip to Europe."

He added that this situation reflects the dangerous fallout after Biden's botched withdrawal from Afghanistan.

Senator Marco Rubio of Florida also linked potential ISIS attacks on American soil to the way the US exited Afghanistan.

On ABC television, he said that [ISIS-K] has regrouped and stressed that they had warned that this might happen with the disastrous withdrawal from Afghanistan.

Rubio continued that one reason they didn't want this hasty withdrawal was that it would give [ISIS] the operational space to reorganise and plan attacks on targets abroad.

Senator Rubio added that ISIS managed to carry out terrorist attacks in Iran and Russia, and "they will do it in America too”.

He called on the Biden administration to strengthen US border security to prevent terrorists from entering the country and prevent an incident similar to Moscow from happening in America.