Current Events and Policy Involving North Korea – 1 August 2017

http://www.cnn.com/2017/07/31/politics/north-korea-ejection-test-submarine-activity/index.html

https://www.google.com/amp/www.nbcnews.com/news/north-korea/amp/sen-lindsey-graham-trump-says-war-north-korea-option-n788396

https://www.theguardian.com/world/2017/jul/31/trump-vows-all-necessary-measures-to-protect-allies-from-n-korea-says-abe

https://www.google.com/amp/mobile.reuters.com/article/amp/idUSKBN1AG04F

And for some perspective from the Congressuonal Research Service (CRS):

https://fas.org/sgp/crs/nuke/R41259.pdf

and

CRS reports

And

https://www.rand.org/blog/2017/07/a-surgical-strike-against-north-korea-not-a-viable.html?adbsc=social_20170809_1721471&adbid=895299134793502724&adbpl=tw&adbpr=22545453