A statement from the Modzitzer Rebbe R'Shaul Yedidya Elazar Taub ZTZL during the WW2 years comes to mind.
אני שלום, וכי אדבר המה למלחמה ) תהילים פרק קכ(.
He says that one's actions have to show peace, but when one talks about peace but his actions demonstrate otherwise, then we know it's to gain time to go to war.
(Transcribed from memory from quite a few years ago, but you get the idea)