On Wednesday, Ukraine declared a 30-day state of emergency and urged Ukrainian citizens in Russia to leave the country.

The Hill reports:

All men eligible to fight were ordered to participate in compulsory military service by Ukraine, Reuters reported.

The development is another indicator that the door to diplomacy is closing and that Ukraine is now readying itself for possible armed conflict.

“Predicting what might be the next step of Russia, the separatists or the personal decisions of the Russian president — I cannot say,” Ukrainian President Volodymyr Zelensky said, according to Reuters.

The declaration comes as new satellite imagery taken on Tuesday by Maxar Technologies indicated a new deployment of military vehicles and troop tents and shelters in southern Belarus less than 30 miles from the Ukrainian border.

The declaration of a state of emergency comes as Russia recognized two breakaway regions of Ukraine on Monday as independent and Putin ordered Russian troops to begin entering the regions.

President Biden remarked that the move by Putin is the “beginning of a Russian invasion of Ukraine.”