How can we finish ISIS and make a world simpler and even better??

Participant in the Iraq War (2003–2011) andInsurgency (2011–present), the Syrian Civil Warand its spillover, the 2014 Libyan Civil War, theSinai insurgency, the War in Afghanistan (2015–present), the War in North-West Pakistan, and theal-Qaeda insurgency in Yemen.
Primary target of the Military intervention against ISIL, the interventions in Iraq and Syria, as well as the Iranian and Turkish interventions, and theGlobal War on Terrorism.

how can we et rid of them?

I need some help the way we can eradicate them

Join the military and go put it to them... Assuming, that is, that world leaders decide to actually take action... Odds are against that, as it would require world leaders to actually have courage and care about the escalating situation, and that's just silly talk now isn't it? Our leaders... actually DOING something about ISIS? *gasp* 

so if we will have some idea here..what the problem? we are only discussing the right steps ...

I take the view that we can't and all that will be done is dealing with situational events.  

To argue that for a complete eradication would mean there would need to be a global military force to disregard the individual nations' sovereignity and no matter how many nations condemn terroristic attacks, there are plenty of politics that all nations are compelled to consider.

Then there's a moral issue that will mix in with playing politics.  If a global force would be made to eradicate one group because they are active, why do most nations stand idly by while failed nations commit atrocities against their own people?   The blind eye to other groups I think is something that from the social perspective should be considered before going in guns a blazing to save the world. There would be a never-ending cycle so there would have to be the support to counter the next group to come along.

I personally believe there would have to be a global change of thought of how to maintain global peace.  Acceptance of higher taxation, losening the idea nation sovereignity and to perceive oneself in a more global perspective, the ability to accept more civil liberties being possibly sacrificed in order to maintain order/peace.  

Whether or not that is the 'best' way, I cannot say.

In addition, I would like to say that I do hope that someday we get to a point that we don't have to worry about hearing about terrorist attacks and that people don't have to worry about the atrocities that they have to worry about due to terrorist activities.  

I just hope we come to it in a manner that doesn't always have some unintended consequence awaiting in the aftermath.  

thanks for contribution