Merkel needs time to achieve the goal?
Just stop spending money on muslim refugees, and you'll be able to put a total of 3% of GDP into your military budget, easily. Don't feed the muslim scum, nor help them in any way. Then they'll go back to the muslim shit holes that they came from, if you make them feel really unwanted, such as have nationalist mobs attacking them with steel pipes, inflicting serious bodily harm, or death. The rag heads will get the message.
Just do it!