Hàozhàn de lǐngdǎorén wǎngwǎng gěi guójiā dài lái zāinàn.
Warlike leaders often bring disaster to their countries.
Tips
grammar
Note the tone change: 好 in 好战 is hào (4th tone), meaning 'to like/be fond of', NOT hǎo (3rd tone, 'good'). 好战 = to like/be fond of war. Compare: 好学 (hàoxué, eager to learn), 好问 (hàowèn, fond of asking questions).