Given a document, find the main entity about whom the author is writing. Write the full name if mentioned in the text. Note that URLs in the text have been replaced with [Link].

Q: Palestinian President Mahmoud Abbas  on Friday urged France and Europe to play a stronger role in peace efforts  insisting  he 'll no longer accept any U.S. plans for Mideast peace because of the Trump administration's recognition of Jerusalem as Israel's capital.
 Abbas  met French President Emmanuel Macron in Paris a day after the U.N. General Assembly resolution denouncing President Donald Trump's decision.
 Abbas  said the United States is "no longer an honest mediator in the peace process."
"We will not accept any plan from the United States of America because of its bias and violation of the international law "  he  said.
 Abbas  also denounced the U.S threat to cut financial aid for countries who voted to back the U.N. resolution. "We call upon countries that did not recognize Palestine yet to do so to preserve the two-state solution before it's too late "  he  added.
Macron reaffirmed  his  disapproval of Trump's decision to recognize Jerusalem as Israel's capital.  The French president  recalled  he  met with Israeli Prime Minister Benjamin Netanyahu earlier this month in Paris and urged  him  to make "courageous gestures" to help revive peace talks  including freezing Israel's construction of settlements on occupied lands.

A: Abbas
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Q: We know that  Nikolas Cruz  wasn't hiding a thing about  his  killing rage in the months and even years before the Florida school massacre.
According to the best British newspaper in America  the Daily Mail   Nikolas Cruz  abused his ex and sold knives out of a lunchbox.  He  was disciplined by the school 25 times and finally expelled.
Good Morning America could not pass up an interview with survivor Ariana Lopez. In her circle  everybody knew that  Cruz  was dangerous.  He  didn't bother to hide it. According to  Ms. Lopez  Cruz  was signaling  his  rage and murderous feelings like mad.
Lopez made it clear during her interview that  Cruz 's problematic behavior and mental health issues were on clear display at school. 'He used to sell knives out of his lunch box  which I thought was insane. You can't have knives  this is a school'  said Lopez of  Cruz . 'He would be like  "hey guys  want some knives?"' One of the incidents that led to his being disciplined was a fight in September 2016. Footage of the brawl emerged over the weekend.  Cruz  was suspended for two days as a result of the fight  which was over a former girlfriend.
This changes the picture completely: what the hell were the school counselors and police authorities doing while  Cruz  was signaling murderous intentions? There is an air of looming tragedy over the Florida school killings  and secretly  many people knew or suspected what was to come.
Any competent teacher  administrator  school cop  or counselor should have seen the signs and should have diverted  Cruz  into a protected environment where  he  could be educated and monitored. If  his  friend Ariana knew he was selling knives  so did dozens of other kids  teachers  administrators  and all the rest. No person in authority acted responsibly. They just kicked the can down the road.
There is no mystery about the Nikolas Cruzes of the world. They have been around forever. It's just that they were spotted and taken care of with discipline and  yes  with love and acceptance  whether they deserved it or not. If they acted out  they were punished appropriately  and if they looked dangerous  they were diverted to activities where they could do no harm.
That's what fathering is all about  and that is what the ancient phrase "in loco parentis" means.  Cruz  should have been effectively disciplined from childhood onward  but  he  was allowed to grow into a raging menace  recognized by other students and by numerous adults.

A: Nikolas Cruzes
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Q: After enduring one too many maddeningly slow boarding experiences  Jason Steffen a professor of physics and astronomy at the University of Nevada Las Vegas  began digging into the unexpectedly complicated mechanics of efficiently ushering passengers onto planes.
In 2008   Steffen  created a computer simulation to evaluate existing boarding methods and ultimately design what  he  claims is the most efficient option for getting restless passengers into their seats. The results were published several years ago in the Journal of Air Transport Management (summarized here).
In  his  research   Steffen  identified the two most common factors responsible for slowing the boarding process to a painful crawl:
In fact  the most routine boarding process â from back to front â is actually the slowest of them all   Steffen âs argues  Itâs even less efficient than boarding a plane in a completely random order.
 Steffen  claims that  his  proposed method  which minimizes the former issue and eliminates the latter  could significantly reduce boarding times  thus cutting down on overall door-to-door flight lengths  and ultimately saving airlines hundreds of millions of dollars a year.

A:
Jason Steffen
****