There's plenty of good analysis on how annexation will be wrong and dangerous, along with much speculation on whether Netanyahu will or won't do it, when, and how much.
MY FOCUS: The permanent damage that's already been caused.
The stated and implicit goal of Islamic State and Al-Qaeda is to force a civilizational conflict between the West and Islam, to demonstrate to 1.6 billion Muslims that there is no place for them in the modern world or among non-believers. The vast majority will probably not accept Trump's contrived declarations, or they will take them on face value without acting on that hostility. But the promise and momentum of the post-War decades, stalled at the threshold of globalization and common cause, are now traumatically inundated with doubt and distrust. Thanks, Donald.
If, with President Obama's leadership on the issue, our nation can succeed on gun control, we might have enough momentum to apply people power against well-organized big money in the other areas as well. It is too late to avert widespread environmental catastrophe during the 21st century, but it is never too late to start instituting serious emission controls and other regulations and incentives to minimize the kind devastation and dislocation that scientific consensus has been predicting for years.