If you have a genuine fear that the father will abduct the child to a foreign country, then you can apply to the court for an urgent parenting order that restricts travel with the child and places them on the airport watch list. Alternatively, the court might impose a bond that facilitates the travel but places funds from the other parent into a trust account to be used to cover legal costs if proceedings to return the child have to commence.
I believe the form is on the Family Coirt website.