Given a document, generate a short title of the document. The title should convey the main idea/event/topic about which the document is being written. Note that URLs in the text have been replaced with [Link].

[EX Q]: Undersheriff Kevin McMahill of the Las Vegas Metropolitan Police Department  said at a press briefing the department has been exploring every aspect of Paddock's life  from birth to death  in search of an explanation.  He  said they have looked into details regarding Paddock's personal life  political affiliations  social behaviors  and economic situation â but answers remain evasive.
"We have been down each and every single one of these paths trying to determine why. Trying to determine who else may have known of these plans  " McMahill  said  adding that the rumors and speculation that have abounded in the wake of the shooting have been unhelpful to their investigation.
"In the past  terror attacks or mass-murder incidents  motive was made very clear  very clear in most of those cases by a note that was left  by a social media post  by a telephone call that was made  by investigators mining computer data  " McMahill  said. "Today in our investigation  we don't have any of that uncovered. I wish we did. We will and are continuing to investigate with great tenacity and hope to arrive at an answer."
 McMahill  also shot down several prevalent rumors that have circulated throughout media reports  telling reporters that they are confident no second shooter was in the room with Paddock during the attack.  He  said  he  could not  however  confirm whether any other people knew about Paddock's plans to carry out the shooting.
 McMahill  also said investigators do not believe anyone other than Paddock accessed  his  suite before the attack  despite reports suggesting a room key was used to enter  his  suite while Paddock's car was outside the hotel's parking garage.
 He  also said the Tannerite â an explosive powder used for long-range target practice â that was recovered from Paddock's home was not in a condition to be used in an IED  as others had questioned.  McMahill  said  it  was also unclear what Paddock intended to do with the tannerite.
Investigators are  however  "keenly interested" in Paddock's medical status at the time of the shooting   McMahill  said. The Las Vegas Review-Journal recently reported that Paddock had been prescribed the anti-anxiety drug diazepam â also known by its brand name  Valium.
"It's really imperative that the listening public have a very clear understanding that there are still a number of people out there that know that something looked out of place  " McMahill  said. "Someone may have been acting suspiciously that night  or in the years prior  the months prior. Somebody that may have seen something or know something."
[EX A]: Las Vegas motive of Stephen Paddock still unclear police say

[EX Q]: Supporters of the Syrian regime rejected any link to a chemical weapons strike. They claimed the reports were fabricated by terrorist groups in Idlib and suggested the fatalities were the result of an explosion at a supposed al-Qaeda chemical weapons factory. Russian authorities  whose warplanes are flying in support of the regime  said they had not conducted a strike in the area around the town. But the broader international reaction was vehement â and put the blame squarely on  Syrian President Bashar al-Assad .
Such strikes are a regime tactic to further demoralize the flagging rebellion. " Assad  calculates  reasonably  that military dynamics play in  his  favor. By using chemical weapons and other weapons   he  is demonstrating the powerlessness of international actors " Emile Hokayem  a Middle East analyst at the International Institute for Strategic Studies  told The Washington Post.
"Today's chemical attack in Syria against innocent people  including women and children  is reprehensible and cannot be ignored by the civilized world " said White House press secretary Sean Spicer. "These heinous actions by the Bashar al-Assad regime are a consequence of the past administration's weakness and irresolution."
It's seemingly a bizarre line of attack for the Trump administration to choose. In 2013  the Obama administration contemplated a military response after a suspected regime chemical weapons attack on rebel-held districts in the suburbs of Damascus killed more than 1 000 people. The mounting international pressure at the time compelled  Assad  to agree to eliminate its chemical weapons program.
The fact that Obama chose to back off from confronting the  Assad  regime  which allegedly used chemical weapons numerous times in the years since  will forever haunt the former president's legacy. Much of the Washington foreign policy establishment has excoriated him for it. But Trump in 2013 â then a private citizen with the same itchy Twitter finger â was opposed to American intervention in Syria.
The irony is that Trump's position on the Syrian conflict isn't that far removed from Obama's â although it's more conspicuous in its indifference to the plight of Syrian refugees. The previous administration called for  Assad 's departure  but it did little to actually push for regime change  fearing that any deeper involvement in the Syrian conflict would risk the sort of blowback and chaos that rocked Iraq after the 2003 U.S. invasion. Trump  meanwhile  has insisted on multiple occasions that he is not interested in nation-building in the Middle East or dictating regime change. His lieutenants indicated as recently as last week that the White House does not prioritize removing  Assad  from power.
[EX A]: A chemical weapons attack in Syria exposes Trumpâs Assad problem

[EX Q]: The tax package would impose a new tax on investment income earned by some private universities and colleges. Sen. Pat Toomey  R-Pa.  added a provision exempting certain colleges that don't receive federal funds. Democrats said Hillsdale was the only college that would benefit.
 Toomey  defended Hillsdale as "a wonderful institution" and said other schools might qualify for the tax break  too.  Toomey  said a school that declines federal funds saves taxpayers "a tremendous amount of money."
"I do understand that my colleagues on the far left do not have fond opinion of Hillsdale. But I do. I actually think it's a wonderful institution "  Toomey  said.
Graduates include Erik Prince  who is DeVos' brother and the founder of the government contractor once known as Blackwater  and former Rep. Chris Chocola of Indiana. Chocola once headed the conservative Club for Growth  an advocacy group that Toomey also once led.
[EX A]:
Senate votes to block special break for conservative college