KYIV, July 1- Ukraine said two of its soldiers were killed after Russia-backed separatists opened fire at a medical vehicle in the eastern region of Donetsk, RFE/RL reported.

The Defense Ministry said that one more serviceman was injured in the anti-tank-missile attack on July 1.

The statement points out that attacks against military medical vehicles and personnel are banned by international treaties and agreements.

This was written by the secretary of the Council of National Security and Defense Council

Oleksandr Danyliuk, the secretary at the National Security and Defense Council, said the attack threatens to undermine peace process in the region that has been ordered by President Volodymyr Zelenskiy.

"Shooting at doctors when they are engaged in the evacuation of the wounded is like shooting someone in the back, which is unacceptable both from an ethical point of view and in accordance with international law,” Danyliuk said.

“Such manifestations of aggression threatens to undermine all efforts to resolve the peaceful conflict in the Donbass,” Danyliuk said.

Meanwhile, the separatists in Donetsk said that one of their fighters was killed and another one wounded by the Ukrainian armed forces.

Since April 2014, more than 13,000 people have been killed in fighting between Kyiv's forces and the Russia-backed separatists who control parts of Donetsk and the neighboring region of Luhansk.

Cease-fire deals announced as part of the Minsk accords -- September 2014 and February 2015 pacts aimed at resolving the conflict -- have contributed to a decrease in fighting but have failed to hold. (rfe/tl/ez)