i think it's pretty readable to be honest. the strait is sewn with metal wire over trump's mouth shutting him up. the word for word translation of the caption is "(it) has narrowed" which has the triple meaning of 1. the strait is closed 2. his big mouth has been shut 3. he's left with no options (the english caption went with this one by translating it as "at the breaking point"). it's also a slight wordplay since the word for strait (تنگه) comes from the noun (تنگ) which means tight or narrow.