The South Carolina governor has become the first woman and minority to join Trump's administration.
California State Attorney General Kamala Harris and Congresswoman Loretta Sanchez battle each other to become California's next United States senator, after winning the top two spots in an open primary on Tuesday, reports Ritu Jha from California.
Does Mrs Donald Trump realise that her immediate predecessor, Michelle Obama, is not the only hard act to follow, wonders Kanika Datta.
Fourteen years ago on September 11, terrorists hijacked four passenger planes and targeted the United States, killing 3,000 people in the attacks.
Janet Yellen is guiding the Federal Reserve towards its first rate rise in a decade armed with traditional economic models that some economists worry could fail her in a world of massive money printing and near zero rates.
Here are some of the best photos from around the world in the month gone by...