No. International is owned by Navistar Corporation. Western Star was bought out by Daimler A.G. in 1997. Daimler A.G. is also the parent company of Mercedes-Benz, Freightliner, Sterling (1997 - 2009), Thomas Built Buses, and was also the parent company of Chrysler until 2009.
Which is why you can get Detroit Diesel engines in a Western Star (as the brand is owned by Daimler A.G. and became proprietary to Daimler products after the 2002 emissions regulations in the US), but not in an International.
Best Parks Ever - 2012 Best Parks to Star in Your Own Western 1-9 was released on: USA: 28 May 2012
Star International was created in 2008.
Western International University was created in 1978.
Western International Communications was created in 1982.
Western International Communications ended in 2000.
Western Star Trucks was created in 1967.
Micro-Star International was created in 1986.
The population of Micro-Star International is 18,000.
International Star Registry was created in 1979.
Western International High School was created in 1898.
Western International School of Shanghai was created in 2006.
Western International School of Phnom Penh was created in 2003.