War slow down the growth and progress of any nation, there is no problem without cause, if there is the cause of the war, there could probably be a solution to this Ukraine and Russia war!.
Where are the world conflict Resolutional body agency?

🤔🤔 The world are sharing gradually in this hardship due to the war, increase of hunger and starvation.
Maybe war increase the growth and progress of any nation. Companies get together to make war materials. They hire the unemployed. Maybe this happen in the US, soon.

He obviously means that war slows down the progress and advance of any nation which is directly involved in the Frontline. You know, those nations which suffer from the bombs dropping down sky or the destruction of infrastructure.
There are indeed companies that have interest in these kind of conflicts to perpetuate as much as possible, but it is not what he meant.
Also, it is kind of cynical to call out warmongers and then expecting an improving of one's country economy in detriment of the life of millions living in the opposite part of the planet.