It's not quite as simple as it just being the USD's strength. In Turkey's case, they are highly leveraged and have probably spent above their means for the last decade whilst growth was also healthy. Now growth is so so, the USD is getting stronger making the debt ratio worse, there is relatively high inflation and consequently the loan markets are becoming tight for Turkey as people are becoming wary about repayments..

Edit: Erdogan's (Turkey's prime minister) strongman attitude, a perceived power grab as well as attack on independent journalism might be contributing too.