Although the Ukrainian army made attempts to take the island, which was under the control of the Russians from the beginning of the war, they have been unsuccessful.
The Russian Defense Ministry on May 10 claimed that the Ukrainian army lost a total of four aircrafts, 10 helicopters, 30 unmanned aerial vehicles, three armored warships, and more than 50 soldiers in last three days of war.
Also, at least 1,351 Russian soldiers died and 3,825 were injured in the first month of the war, according to the Russian military authorities, who did not disclose further details.
Russian officials claimed that the Ukrainian army lost 23,367 soldiers during the war, while Ukraine claimed that 29,350 Russian soldiers have died so far.
Neither the Ukrainian nor the Russian side gave exact figures regarding the civilian casualties in the war.
NUMBER OF UKRAINIAN REFUGEES EXCEEDS 6.5M: UN
According to the UN refugee agency, more than 6.59 people have fled from Ukraine to other countries since the war began, while more than half of them went to Poland.
One out of every six people was internally displaced due to the war, making the total number 7.7 million, said the UN's International Organization for Migration.
The UN also noted that at least 3,930 civilians have so far lost their lives and 4,532 injured in the war.
The Russian and Ukrainian delegations held a total of four face-to-face negotiations, with three of them in Belarus and one in Turkey, to ensure a cease-fire.
In Belarus, both sides could only agree on humanitarian corridors for the evacuation of civilians from conflict zones.
As a result of the mediation attempts by Turkish President Recep Tayyip Erdoğan, the Ukrainian side delivered the principles of a draft agreement to the Russian side during negotiations held in Istanbul on March 29.