Axios

The crew on a Hong Kong-bound flight said they saw North Korea's latest missile test blow up over the Sea of Japan last week. Korean Air pilots on separate flights from California to Seoul also reported seeing flashes of light believed to be the missile while flying over Japan.

Get smart: Experts told AP that it's unlikely a missile test would hit a civilian airliner. Vipin Narang, an expert on nuclear strategy at MIT, said North Korea likely selects splashdown points for each test to avoid airline routes.

The European Union and the United Kingdom failed to reach a Brexit deal today after a round of negotiations in Brussels. However, E.U. Commission President Jean-Claude Juncker and Prime Minister Theresa May both expressed optimism during a joint press appearance that a deal could be reached as talks continue later this week.

The impasse: Most of the buzz surrounding today's negotiations centered on the Northern Ireland/Ireland border, with concerns that a potential deal might involve Northern Ireland, which is part of the U.K., remaining within the E.U.'s single market and customs union. That led to backlash from both May's allies in government, Northern Ireland's Democratic Unionist Party, who vehemently oppose such a deal, and leaders in remain-heavy Scotland and London, who would want such a deal for themselves.