The Wars

The hHuman beings can be very intelligent as ian individual person*, but can also be very stupid as a collective.

*or "individual people"

It is painful but while exist the arms,as long as weapons exist, wars will exist wars.

If one of the contenders become absolutely crazy, and this fighter can tocan have access to nuclear weapons, then...., then, the picture that go out is very, very sad and disastrous.

The human being can be very intelligent as ian individual person, but can also be very stupid as a collective.

It is painful but while exist the arms, exist, wars will exist wars.

You could also say "wars will persist (continue to exist)", but I kept "exist" just because it matches the previous usage.

Yestaerday could seem incredible, but today we have a war inside of Europe.

We must to think that the wars can the takebring out the worst of one person.

I think this is what you meant? Unless you meant something like "wars can eliminate the worst people".

If one of the contender becomes goes absolutely crazy, and this fighter can tocombatant has access to nuclear weapons, then...., then, the picture that go out ibecomes very, very sad and disastrous.

A combatant is a person in a war who fights with another. I think this word fits better in this context.

With wars, there areis not hope for the humanity.

The human beingHumans can be very intelligent as individual person, but can also be verys, but are often stupid as a collective.

It is painful but while exist the arms, will exist warsto admit, but while weapons exist, wars will happen.

Yestaerday could seem incred, it seemed impossible, but todaynow we have a war inside of Europe.

We must to think that the wars can the takears can bring out the worst of one personin people.

If one of the contender becomesides goes absolutely crazy, and this fighter can tohas access to nuclear weapons, then...., then, the picture that go outotential future is very, very sad and disastrous.

WithIn wars, there are notis little hope for the humanity.