Secretary of State Antony Blinken told “Good Morning America” anchor George Stephanopoulos in a new interview that Russian President Vladimir Putin’s declaration of martial law in illegally annexed parts of Ukraine “speaks to his desperation” as Ukrainian forces continue to make progress in rebuffing the invasion.

“Just in the last few weeks, he’s tried to mobilize more forces. He’s gone through with this sham annexation of Ukrainian territory,” Blinken said in a preview from the sit-down, which will air Thursday on “Good Morning America.”

“Now, in saying that he’s declaring martial law in places that he claims to have people who somehow want to be part of Russia, that speaks to his desperation,” the secretary said.

MORE: Putin adds martial law in Ukraine regions, limits in Russia

Blinken’s remarks come after Putin issued an order this week declaring martial law in four Ukrainian provinces that he seized in September, which was widely denounced by the international community.

Putin also placed all of Russia into various levels of heightened “readiness.”

When Stephanopoulos noted that second declaration and questioned Blinken if Putin is preparing for “all-out war,” Blinken said Russia’s invasion is already becoming more indiscriminate in its violence.

“Going increasingly after the civilian population in Ukraine, indiscriminately bombing, targeting even power plants, bombs falling on schools, on hospitals — that’s pretty close,” Blinken said.

More of Stephanopoulos’ interview of Blinken airs Thursday on “Good Morning America.”

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