The storyline "The Circle" was focused on the revelation of a failed assassination attempt on Diana when she was a baby, by four rogue Amazons. These Amazons – Myrto, Charis, Philomela and Alkyone, collectively referred to as The Circle – were Hippolyta's personal guards and were extremely loyal and devoted to her. However, when Hippolyta decided to raise a daughter, The Circle was horrified and considered the baby ill-fate, one who would ruin their entire race. Thus, after Diana was sculpted out of clay and brought to life, The Circle decided to assassinate the baby. Their attempt was foiled however, and the four Amazons were imprisoned. After years, the Circle escaped their prisons with the help of Captain Nazi, and decided to accomplish their previously failed mission and kill Diana. Diana defeated Myrto, Charis, Philomela and then approached Alkyone, who runs off and succumbs to her death by falling into the ocean. The other three Amazons return to their prisons.
In the "Watchmen" sequel "Doomsday Clock," Doctor Poison attended the meeting established by the Riddler and mentioned a rumor that Wonder Woman was forcefully dragged back to Themyscira by her fellow Amazons. Wonder Woman comes out of hiding to address the United Nations, hoping to defuse the metahuman arms race. However, the summit is interrupted by Black Adam, the Creeper, and Giganta, who take advantage of the absence of most of Earth's superheroes to attack the UN at the time when the superheroes were confronting Doctor Manhattan on Mars.
Wonder Woman is trained in the a variety of martial arts, making her a master of unarmed and armed combat (even proving adept with pistols). Before Flashpoint Batman considered Diana the best melee fighter on the planet, even putting her ahead of Superman, due to the combination of her power and the depth of her training. Even when depowered, she is on par with some of the best hand-to-hand combatants in the DC Universe.