Complex sentence: In 2005 Fox joined the IRA's Army Council replacing Brian Keenan who resigned due to ill-health, but himself resigned in September 2006 after accusing Gerry Adams and Martin McGuinness of "undemocratically" controlling the organisation.
Split into simpler sentences: In 2005 Fox joined the IRA's Army Council replacing Brian Keenan who resigned due to ill-health. Fox resigned in September 2006 after accusing Gerry Adams and Martin McGuinness of "undemocratically" controlling the organisation.