Pretty much like we have been doing but with one minor diffrence.
Nobody ought to tell them that we are on the verge of giveing up.
Why would they ever quit if they always are presented with a light at the end of their tunnel?
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The US is not going to stay in Iraq forever, just as they did not stay in Vietnam forever. Vietnam was only a 12 year stay from 1964 to 1976, roughly. There always has been light at the end of their tunnel.
But the Sunnis want to control the country before the US leaves, the Shiites also want to control the country, and the Kurds want independence, or at least autonomy.
When the US leaves, there won't be nearly as many arms available, and the money will dry up.