This is going to end badly, either for the 45th President, the 800,000 furloughed workers, or both.
But consider this: world leaders are watching the President renege on agreements negotiated at his direction, knowing the price of his repudiation of those agreements will be the financial ruin of his employees, and untold damage to the citizens who rely on the services those furloughed workers provide.
Why then would any government on the planet look to the Trump administration for partnership or assistance? We clearly cannot be trusted.