Did WW3 Start in 2015?

On August 12 2015, China devalued it's currency in direct conflict with the wishes of its largest trade partner The U.S.
https://www.theguardian.com/business/2015/aug/12/china-yuan-slips-again-after-devaluation

At 11:30pm CST an explosion many times larger than Hiroshima and Nagasaki occurred at the port of Tianjin.

Below is a rough estimate of the size of the explosion by College Proffessor and YT scientist "Thunderf00t".
According to his calculations , this explosion was large enough to obliterate Yankee stadium.

Tianjin is a major port city in northeastern China. It is also home to the world's largest supercomputer (as of Aug 2015) In October 2010, an upgraded version of the machine (Tianhe-1A) overtook ORNL's Jaguar to become the world's fastest supercomputer, with a peak computing rate of 2.57 petaFLOPS according to Wikipedia.
https://en.m.wikipedia.org/wiki/Tianhe-I

This explosion was not the only suspiciously large explosion to occur in China that same week. Below we have the Aug 18 explosion in Shandong province.

What is going on here ??