The advance of the Syrian Kurds, who now hold half of the 550-mile Syrian-Kurdish border, was the main external reason why Turkish President Recep Tayyip Erdogan offered the US closer cooperation, including the use of Incirlik, which had previously been denied.
The notion of an external reason is, basically, a confused notion.
A kind of the enthusiasm depends on an external reason to be having this feeling, and the other depends on itself [17].
We are not obliged to say, absurdly, that this person has a genuine internal reason to drink petrol, nor to say, in contradiction of the internal reasons thesis, that this person has a genuine external reason not to drink what is in front of him.
Out of a hundred deals you may be working on, half of them may not even close for some external reason that may not be in your control.
Unless there is an external reason that something must be accomplished at a particular hour ("Pick up kids from school," "Client meeting 10 a.m")., don't assign time slots.
