Pretty sure that terrorists already know that fertilizer goes boom (and flour dust, and so on). However, as RSColonel said, it's not that easy to bring a couple of thousand tons of stuff into a city.

True as my friend said to me yesterday, but if any of the less educated saw it they have a pretty clear picture now. What is amazing is that it was stored there since 2014 and didn't go off sooner.

Drawing a conclusion from the News ( Until more is found out about the blast) It seems , the Officials of the Port/City Knew for years about the potential danger,but decided to " Kick the Can down the Road ". A kinda of why make/enforce a decision Today when U can wait or pass the buck later.

If it were smuggled in in small amounts over time, or hidden aboard a cargo ship with the intent of detonating it pier side or a short distance offshore, I don't think it would be all that difficult.

Much easier to get into a truck and drive through a crowded street.
Far less chance of detection. Trying to move hundreds of tons of fertilizer takes such a large organization it would have large chances of detection.

History of the ship that carried the ammonium nitrate https://www.nytimes.com/2020/08/07/world/middleeast/lebanon-explosion-ship.html

New videos

If it wasn't so sad it would be comical. Nearly 3000 tons of explosive and a few tons of fireworks in the same building. The people responsible for not rectifying this should be hung by their balls from a crane in the city center.

Looking at the video from the Sun, I have to wonder why someone set up on a roof to film a fire at the port? Were they expecting it to blow up because it was a Fireworks warehouse?

Slowing this video speed for 0.25 the effect of blast the building at left right (black) is astonished.

Download any YT video by entering their links here

https://www.y2mate.com/en53

Only if one wears a tinfoil suit.

What is that supposed to mean?

It is someone's balcony - an apartment, perhaps an office, but you can see potted plants and other elements suggestive of a normal domestic environment.

I myself have filmed an accident, fire and explosion (in my case a 'minor' incident involving overheating bitumen using propane heaters on the unfinished roof of a new development ~ some 15 minutes after the initial alarm sounded the propane tanks at the seat of the fire exploded sending debris some 500m into the river (around twice the distance to the window I was filming from).

I see nothing unusual or even noteworthy about the filming location (it was slightly rarer to have a film camera when I recorded my fire, but now almost everyone has a tablet, phone or similar device in their pocket/bag nearly all the time, and the absence of such footage would have been more surprising IMO).

AAAAND the video is now deleted....maybe because it show a invisible object in the sky near the building being vaporized by the blast ?

No. It is right there, post 4533062. From the Sun, on a balcony. Watching an 'interesting event' visible 'from home'.

Looks like no one went to prison for it

https://en.wikipedia.org/wiki/2020_Beirut_explosion#Investigation

Scary new footage in this Australian report