Donald Trump isn't an isolationist.
Not sure what to make of this except:
1) Of course the party leadership doesn't want to run him. Adhering to Republican Party principles would end the gravy train for them. The Republican Party in Congress has purposely bent the knee to the Obama administration on issues of national integrity, over and over again, because it benefits Wall Street. Amnesty, bailouts, excessive government spending, unlimited funding for Obamacare, Common Core, etc., come straight from the mouthpiece of the US Chamber of Commerce.
2) The "Lucky Hitler" argument fell apart after he dismantled 16 other candidates, one by one, upsetting many tried-and-true political science principles. Attacks by all of the Karl Roves of the day ultimately failed. Hundreds of millions of donor money were wasted. The GOP tried to structure the primary in order to elect Bush with only 25% of the votes. Instead, Donald Trump shattered the roadmap and set records in the process.
3) The down-ballot candidates are only in danger because they're lukewarm Republicans who elicit no support from their base. Several incumbents, like Ayotte, McCain, and Rubio, are facing strong primary challenges. Ironically, if they had stayed true to their values, or joined the Trump train early on, they wouldn't be in nearly as much of a political mess.
Senate Majority Leader Mitch McConnell plans to run losing candidates, because if Donald Trump wins with a Republican-majority Senate, then the GOP establishment will have no choice but to either acquiesce to Donald Trump, or suffer the fate of former Republican Majority Leader Eric Cantor.
The Republican establishment has already used up every single attack they could against Donald Trump. The DNC is completely out of ammo. Yet Donald Trump is getting started.
On the contrary, Hillary Clinton is doing incredibly poorly, given how easily she won the Democratic Primary and given the viciousness of the GOP primary.
Given the fact that pollsters need to sample 50% Democrat voters to even keep Hillary Clinton ahead in the polls, Donald Trump will be running effectively unopposed by October if the Democrats don't replace Hillary Clinton. She has no chance.
There was chance for long-lasting peace in the Middle East in 2009, when Hillary Clinton begin her tenure as Secretary of State. Within three years, several governments were toppled in US-supported coups, a new radical terrorist group was on the rise thanks to US weapon shipments, and millions of people were either killed or displaced. This has further resulted in political chaos in Europe.
The US-approved Mohammed Morsi government released hundreds of terrorists, some who would go on to plan the Benghazi attack, before the Egyptian Army finally had enough and took over the government again. And the beginnings of a terrible nuclear deal, which places Iran under zero effective restrictions, was underway during Clinton's tenure as Secretary of State. What successes can Hillary Clinton count, besides minor token accomplishments that are far overshadowed by the death and destruction she has rained on the world?
If by "real" politician, you mean "failed" politician, then sure. Hillary Clinton is your best bet.