In the poster below, the Arabic calligraphy at the top translates to the following English statement:

And the next line:

The meaning of Tawheed is monotheism, the doctrine or belief that there is only one God.This is in contrast to the Christian doctrine of the Trinity (one God in three divine persons - Father, Son, Holy Spirit)

The branding at the center is for the pro-ISIS media group Al-Taqwa.

The background image is self explanatory.

In the poster below, the scene appears to be the intersection of Washington St. and Water St. in the Dumbo area of Brooklyn.

In the red text box on the left, the Arabic calligraphy is a direct translation of the English statement appearing immediately below:

This passage appears twice in the Koran (11:49, 28:83). The general thrust of the statement in both contexts is the promise of blessing for those who are obedient. 

The full English threat statement reads as follows:

The branding is for Al-Irbaad, which refers to a heavy lion. It is also a common male name.

The phrase Istish 'hadi appearing just right of center on a red background literally translates to:

In the poster below, the setting is a view from Westminster Bridge facing Big Ben and the Palace of Westminster in London. 

The English quote in the lower right corner is the 5th verse of the 9th chapter of the Koran (referred to as Al-Tawbah) and is commonly known as the Sword Verse:

The full passage within the Pickthall translation reads as follows:

The branding in the lower left corner is for the previously unknown Green Birds.

Beneath the elbow of the jihadist figure (though partially clipped off in the original) is the following statement: