Here's what you missed this weekend: Trump tries to respond to dead children at the border, Kelly says the 'wall' won't be a real wall at all, and truculent truck drivers block Tesla Superchargers

The deaths of two migrant children in US custody at the southern US border prompted renewed tensions over Trump's immigration policies, while the president again sought to blame Democrats.

In a wide-ranging interview with the Los Angeles Times, outgoing White House chief of staff John Kelly said there is no actual wall, and the administration's zero-tolerance immigration policy was a surprise to officials.

• Outgoing chief of staff John Kelly says Trump's 'wall' won't actually be a wall: 'To be honest, it's not a wall' On Trump's long-promised "wall": "To be honest, it’s not a wall."
• Outgoing chief of staff John Kelly says Trump's 'wall' won't actually be a wall: 'To be honest, it's not a wall'" Kelly's comments echo Trump's recently changing tune, saying it would be more like "fencing," that was an "artistically designed" set of "steel slats," not concrete.
• Outgoing chief of staff John Kelly says Trump's 'wall' won't actually be a wall: 'To be honest, it's not a wall' Kelly said, blaming former Attorney General Jeff Sessions for the administration's policy that resulted in the separation of hundreds of migrant children from their families, saying "He surprised us."

Lady Gaga kicked off her Vegas residency "Enigma" at the Park MGM Resort in Las Vegas.

• There were keytars, Spongebob comparisons, and multiple flying moments. Check out the photos from opening night.

• Lady Gaga broke down in tears as she performed 'Shallow' for the first time live at the residency. See the video.

Truck drivers are blocking Tesla Superchargers. But really, if you somehow missed it this year, Tesla and its erratic chief executive Elon Musk certainly had an exciting 2018. Take a moment here to reflect on the brilliant, and then bizarre, in this blow-by-blow account.

• A recent spate of blocking Tesla Superchargers has some drivers comparing the practice to "rolling coal."
• One Tesla owner told Business Insider a group of truck owners harassed them in the parking lot of a Sheetz convenience store in North Carolina, just as CEO Elon Musk looks to expand the charger network nationally.
• Tesla had an eventful 2018. Full of drama, obstacles, success and Elon Musk.
• Tesla's mercurial CEO, attracted attention for his unpredictability, which often led to lawsuits from investors and an investigation from the Securities and Exchange Commission and the Department of Justice.
• Here's every bizarre thing that happened to Tesla this year as it heads into 2019 with equal cause for optimism and anxiety.

US military says it's responsible for killing 1,139 civilians in its fight against ISIS — but others estimate much higher numbers

• The US military says it is responsible for inadvertently killing 1,139 civilians in its fight against ISIS since August 2014.
• However many suggest this figure is not accurate, according to a report from Defense One's Kevin Baron.
• The report flags that 12 civilians were killed in a May 2017 strike on Mosul alone.
• Other estimates are much, much higher, suggesting the civilian death toll in the US's fight against ISIS is closer to at least 7,000.

Another four-star Army Gen. has taken aim at President Donald Trump's performance. He says the Commander in Chief is dishonest and immoral.

• Retired four-star Army Gen. Stanley McChrystal criticized President Donald Trump's handling of the job of commander-in-chief.
• In an interview on "This Week," McChrystal said, "I don't think he tells the truth."
• He called the Commander in Chief is dishonest and immoral.
• McChrystal was also critical of Trump's recent visit to Iraq and his decision to withdraw troops from Syria.

Now we know the secret identity of the former Russian spy who doubled as Paul Manafort's main foreign contact during the fraught 2016 US presidential election.

• Aninvestigation by TIME magazine found an ex-spy named Victor Boyarkin was responsible for collecting Manafort's debts to wealthy Russian-Ukrainian oligarch Oleg Deripaska, for which Manafort offered direct access to then-candidate Donald Trump's campaign.
• The special counsel Robert Mueller already called out the former Trump campaign chairman for breaching his plea deal by telling “discernible lies” after agreeing to cooperate in the Russia probe.
• Prosecutors said Manafort lied in statements he made about his association with Deripaska and a litany of other key testimonies.