Nice poem...keep it up :D

'Only time can tell"

Good use of your title in your first stanza.

"Only time can tell
When it will end?
...all these sufferings
...all these crying
...and when to stops these enormous torment"

I like your repetition of "Only time will tell? When will it end" In every stanza. Very good Consistency

"Only time can tell
On what the future awaits us?"

It sounds nice how you changed it from "When will it end" To "On what future awaits us?"

"And only time can tell
When does the harmony will reign us? "

I like your ending, its powerful yet simple which makes a great contrast in this poem. Very good work, keep it up! You should check out some of my poetry sometime.