1. No. Accidental damage is not covered by warranty. Apple will repair the screen for the out of Warranty screen repair price:
iPhone Service Pricing - Apple Support
2. Warranty on iPhones is not international. Apple may restrict service of the iPhone to the country of purchase as per the terms of their Warranty:
Apple One (1) Year Limited Warranty
IMPORTANT RESTRICTION FOR iPHONE, iPAD AND APPLE TV SERVICE.
Apple may restrict warranty service for iPhone, iPad and Apple TV to the country where Apple or its Authorized Distributors originally sold the device.
Apple may still replace your screen at an Apple store outside of the U.S. however. Only thing you can do is take it in, and find out.