  In the first part of this talk, a short overview of the ongoing debate on the
existence of de Sitter vacua in string theory is presented. In the second part,
the moduli stabilisation and inflation are discussed in the context of type
IIB/F-theory. Considering a configuration of three intersecting $D7$ branes
with fluxes, it is shown that higher loop effects inducing logarithmic
corrections to the K\"ahler potential can stabilise the K\"ahler moduli in a de
Sitter Vacuum. When a new Fayet-Iliopoulos term is included, it is also
possible to generate the required number of e-foldings and satisfy the
conditions for slow-roll inflation.
