0121-5051 0121-5051 S0121-50512020000200131 10.15446/innovar.v30n76.85218 Portugal Portugal 00 06 2020 00 06 2020 30 76 131 141

2016 1-14 2003 1 1 103-30 1971 127-86 2014 1977 84 2 2 191-215 1986 2018 13 2 2 130-6 2000 2017 1983 39 82-121 2002 2014 4 5 5 497-504 2004 Almada, Portugal 2013 1 169-87 2013 83 4 4 550-8 2003 15 187-219 2003 52 279-87 2008 2010 1988 1989 44 3 3 513-24 2001 50 3 3 337-428 2013 1996 2013 25 77-83 1998 2013 2003 97-119 2012 88 2 2 369-76 2017 2017 308-13 2011 66 65-72 2005 2010 19 145-65 2010 10 141-60 1991 26 3-4 3-4 207-31 2016 123-45 2008 2018 26 2 2 163-71 US Army War College 2011 2000 25 1 1 82-91