Is he no longer interested in me?

Met a guy , really hit it off , talked for a few weeks.
Lovely messages back and forth. He mentioned he is INFJ.
He works in international development.
He is very attractive.

After a few weeks he suddenly says that with the Ukraine war he needs to travel and urgently take care of a project.

That's where things got different.

He replies to my text messages very short and claims to have had no rest.
He doesn't take any initiative by himself anymore.

He didn't ghost me though because ghosting would imply no longer answering.

He just stopped taking initiative all together.
While he was the one who was very eager to get to know me , those first few weeks.

Could it be that his work really consumes all his time for this last two weeks or is it an excuse to not say '' I'm no longer interested? "

He knew everything important about me by the way.
So I didn't hide anything.