Two European officials told CNN that Secretary of State Antony Blinken warned European allies that the United States believes the Russia’s invasion of Ukraine might extend until the end of 2022, as US and European officials have increasingly judged that the conflict has no short-term conclusion in sight.

There is no sign that Vladimir Putin’s ultimate intentions have altered, and it is doubtful that he will undertake diplomatic dialogue unless he is confronted with military defeat, according to numerous officials who talked to CNN about the conflict.

When Russia was anticipated to rapidly conquer the Ukrainian capital of Kyiv early in the war, understanding that this may be a long-term fight was a significant shift, and it highlights Moscow’s combat failings.

There will be a greater humanitarian toll on Ukraine’s people as the conflict continues. Despite the fact that international support for Ukraine is expected to continue to be robust, authorities noted that there may be practical difficulties in dealing with armament as the conflict continues.

“Protracted” conflict in Ukraine is expected to continue for “months or maybe longer,” according to National Security Adviser Jake Sullivan.

According to certain members of Congress and their aides, the Korean War, which lasted for three years, serves as an analogy.

A stalemate in eastern Ukraine, where Russian forces are set to begin a fresh attack, may persist for four to six months, according to two additional European officials who spoke to CNN.

“Blinken has raised with his counterparts our fear that the war may be extended, but all of his contacts have centred around how best to bring it to a conclusion as fast as possible,” a senior State Department official said.