Good morning. We'll get the blog rolling today with a few of the tweets that caught our eye overnight:
This ends our live blogging for January 12. Be sure to check back tomorrow for our continuing coverage.
U.S. helping Ukraine probe power-grid hack:
The United States says it is helping Ukraine investigate an apparent attack in December on the country's power grid.
The U.S. Department of Homeland Security said on January 12 it was assisting the Ukrainian authorities.
The incident on December 23 left 80,000 customers of western Ukraine's Prykarpattyaoblenegro utility without power. Some experts have described it as the first-known power outage caused by a cyberattack.
The Ukrainian Security Service (SBU) has blamed Russia for the incident, while U.S. cybersecurity firm iSight Partners linked it to a Russian hacking group known as Sandworm.
Confirmation that Russia was behind the Ukraine attack would put pressure on U.S. President Barack Obama to publicly assign the blame as he did when he identified North Korea as the culprit in a cyberattack on Sony Pictures Entertainment in 2014.
Obama later ordered sanctions on North Korea and ordered a cyber-counterattack on its web system. (Reuters)
Lawyer says captured pilot Savchenko's health 'worrisome':
A lawyer for Ukrainian military pilot Nadia Savchenko, who has been on hunger strike in Russian custody for nearly a month, has described the state of his client's health as "worrisome."
Lawyer Nikolai Polozov said in a tweet on January 12 that Savchenko had lost 15 kilograms since she started a hunger strike on December 17.
Polozov also said she feels pains in her stomach and heavy nausea.
Savchenko launched the hunger strike to protest a Donetsk city court's decision in Russia's Rostov region to prolong her detention until April 16.
Russian officials say Savchenko helped relay information to artillery units that fired near a location in eastern Ukraine where two Russian journalists were killed by artillery fire in 2014.
Savchenko, 34, denies the accusations, saying she was kidnapped and forcibly brought to Russia in July 2014.