Today's edition of quick hits:
* Yemen: "A suicide bomber attacked a crowded square here in the capital on Thursday, killing more than 40 people and adding to fears that Sunni extremists were mobilizing new attacks against a Shiite rebel group that took control of Sana last month."
* St. Louis: "A St. Louis police officer fatally shot a young black man on Wednesday night, sparking protests in the south of the city just a day before thousands of protesters are expected to arrive in Ferguson, Missouri for rallies and marches over the killing of Michael Brown."
* Related news: "A state senator and other black leaders on Thursday called for the Justice Department to investigate the fatal shooting of a black 18-year-old by a white St. Louis police officer, an incident that some protesters are likening to the death of Michael Brown in nearby Ferguson."
* Not a moment too soon: "Attorney General Eric H. Holder Jr. on Wednesday called for a wide-ranging review of police tactics and training, speaking to dozens of mayors and police chiefs who had gathered here to discuss race relations and policing in the United States in the wake of protests in Ferguson, Mo."
* Ebola: "Federal health officials will require temperature checks for the first time at five major American airports for people arriving from the three West African countries hardest hit by the deadly Ebola virus. However, health experts said the measures were more likely to calm a worried public than to prevent many people with Ebola from entering the country."
* Related news: "The Spanish health authorities said Thursday that the condition of an auxiliary nurse infected by Ebola had worsened, three days after she became the first person to test positive for the disease in Europe. The deterioration in the nurse's condition came as the authorities announced that one more health care worker had been quarantined, in addition to three others who were isolated overnight at the same hospital where the nurse works."
* ISIS: "Islamic State militants are threatening to overrun a key province in western Iraq in what would be a major victory for the jihadists and an embarrassing setback for the U.S.-led coalition targeting the group."
* Coalition: "Canada's parliament has voted to authorise air strikes against Isis in Iraq, joining the US-led bombing campaign. The Conservative party of Stephen Harper, the prime minister, introduced the motion last week and it was debated this week. Harper has a majority of seats in parliament so the vote was all but assured. The motion passed on Tuesday by 157 votes to 134."
* West Virginia: "West Virginia will 'bring to a close' the pending litigation over its same-sex marriage ban after the Supreme Court effectively allowed gays to wed in the federal circuit that the state belongs to, its attorney general said Thursday."
* And speaking of marriage: "Supreme Court Justice Anthony Kennedy mistakenly blocked the start of same-sex marriage in Nevada in an order that spawned confusion among state officials and disappointment in couples hoping to be wed."
* Hong Kong: "The government in Hong Kong backed out of talks with students leading pro-democracy protests Thursday, saying it was not prepared to discuss their basic demand for democracy, and warning that the 'illegal' occupation of the streets must end before meaningful negotiations could begin."
* Wall Street's dizzying week: "The benchmark Dow Jones Industrial Average dropped more than 300 points Thursday, continuing a three-day streak of triple-digit swings that has investors' heads spinning."
* The Washington Post's big Cartegena story generated plenty of chatter, but there's ample reason for skepticism.
* And we’re still working on our new Whip Count project. We’re keeping a running tally of members of Congress who want to return to session – cutting their vacation short – in order to vote on authorizing military intervention against ISIS. I hope you’ll take a look and keep us posted.
Anything to add? Consider this an open thread.