Lord Stannis has the best claim to the Throne, he is a proven battle commander and he is utterly without mercy. Stannis Baratheon is Robert's true heir.
For it was the Lord himself who hardened their hearts to wage war against Israel, so that he might destroy them totally, exterminating them without mercy, as the Lord had commanded Moses.
During his abode in the Castle, a continual warfare had been carried on between him and the Duenna; and now that He found his Enemy so absolutely in his power, He triumphed without mercy.
For example, tigers are hunted for fur to make carpets so that they can only live in secure reserves; grassland is destroyed without mercy so that dust storms come into being affecting distant cities.
The immune system does not care though, and this time it even has experience - instead of starting with police, swat teams go right in to tear Tumor Town down, killing its inhabitants without mercy.
The morning was grey, wild, and melancholy; the wind moderated before sunrise, and then went about, and blew in puffs from the shore; the sea began to go down, but the rain still fell without mercy.
They are armed with bows and spears; they are cruel and without mercy. They sound like the roaring sea as they ride on their horses; they come like men in battle formation to attack you, Daughter Babylon.